BS EN 61508-6:2010

What is BS EN 61508-6 - Functional safety of programmable electronic safety-related systems about?

BS EN 61508-6 is the sixth part of the BS EN 61508 multi-series that discusses the functional safety of electrical/electronic/ programmable electronic safety-related systems. BS EN 61508-6 contains information and guidelines on IEC 61508-2 and IEC 61508-3 .

Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application Annex B gives an example technique for calculating the probabilities of hardware failure and should be read in conjunction with 7.4.3 and Annex C of IEC 61508-2 and Annex D Annex C gives a worked example of calculating diagnostic coverage and should be read in conjunction with Annex C of IEC 61508-2

Annex D gives a methodology for quantifying the effect of hardware-related common cause failures on the probability of failure Annex E gives worked examples of the application of the software safety integrity tables specified in Annex A of IEC 61508-3 for safety integrity levels 2 and 3

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